PDF《陈峥偶氮苯取代吡唑啉衍生物 PMMA 薄膜的光诱导双折射性...》

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1 , YANG Qing-Xin

2 , LU Ran 1* , PAN Ling-Yun

2 , ZHAO Ying-Ying

1 ( 1. College of Chemistry, 2. College of P hysics, Jilin Univ ersity, Changchun 130023, China) Abstract Three azo-dyes, 4′ -{[ ( 2-hydroxylethyl) methyl] amino}-4-nitroazobenzene( 1) , 1-[ 4-( 4′ -ni- trophenyl) -azophenyl] -3, 5- biphenyl-2-pyrazoline( 2) and 1-[ 4-( 4′ -nitrophenyl) -azophenyl] -5-( 4′ -hy- droxylphenyl) -3-phenyl-2- pyrazoline( 3) w ere synthesized. The polarized photoinduced birefringence and relaxation process of those azo-dyes doped w ith PM MA films w ere investigated under polarized laser intensity. T he results indicate that compounds w ith pyrazoline group have a high storage rate and thermal stability. It has been found that the birefringence signals decrease w ith the increase of the temperature, but the effect of temperature is different for the three compounds. Compounds

2 and 3, w ith pyrazoline groups have a good thermal stability at room temperature, and compound

3 can even keep 30% of its maximum birefringence at

90 ℃. Keywords Pyrazoline;

Azophenyl;

Birefringence;

Temperature effect;

PM M A ( Ed. : V, X)

145 No.

1 金 明等: 偶氮苯取代吡唑啉衍生物 PMMA 薄膜的光诱导双折射性质研究 ........